Engine



July 5, 1927- H. E- MucHNlc ENGINE Filed Sept. 1 1924 2 Shoots-Sheet 2atented July 5, 1927..

NITED STATES PATENT." OFFICE.

HENRY E. MUGHNIO, 0F ATCHISON, KANSAS.

ENGjtNE.

Application filed September 15, 1924. Serial No. 787,735

The present invention relates 'to engines of the type used inlocomotives.

Heretofore, in constructions of this type, the parts of the engine wereseparately formed and secured together, and it has been impossible tosuccessfully make the structure in a single integral construction.

The present invention comprehends the making, preferably by casting, ofthe parts integrally into a single construction ,and preferably of caststeel. In this way less material may be used and greater strengthobtained, as well as the eliminating of flanges,

bolts,rivets, and the likesecuring means, as also the eliminating ofmachining, aligning and the fitting of parts. The working loose of thepieces will also be avoided and greater rigidity asa whole will besecured, as well as a permanency of relation of the parts. In the caseof using cast steel greater tensile strength is had, and there is lessliability to breakage and fracture as is the case when using cast iron.If any damage occurs to any portion of the structure cast from caststeel, it can be readily repaired by welding, as by autogenous orelectric welding, without the loss and replacement of the portionaffected, and the incident labor and'time that would be necessary formachining, aligning and fitting the new part. Such material also hasresilience, and hence can.

be subjected to greater stresses, indefinite contractions, andexpansions from heat changes, and thelike, without danger of injury; Inthis way the present invention eliminates liability of fractures andreduces the necessity of special designs, such as for strength anddistribution of forces, and also requires less weight of material. Itwill last indefinitely until worn out, and will not re:

quire replacement. Bythis invention a single integral structure oflighter weight and greater strength may be had with a great economy'of.labor and cost.

It is, therefore, among the objects of the the parts so asto eliminateflanges, bolts,

rivets, and "like securing elements, and the incidental cost and laborfor making and the steam inlet and exhaust later appear and are tegrallyforming the cylinders and the heads thereof; to. preferably form theguide studs for the cross-head guides, integrally with' the heads suchas the back head of each cylinder; to integrally form the cross-headguides and brackets therefor to a head of the steam chest, such as theback head thereof; to preferably form the back head of the steam chestintegrally with the steam chest body; to form the heads of the cylinderand respective steam chest integral; to form the cylinder, steam chestand the heads therefor in a single integral piece; to form the frame ortransverse member between the cylinders and steam chests, on each sideof the locomotive, integrallywith the same; to provide the frame ortransverse member with an integral center casting or hearing adapted tobe engaged with the truck or frame of the locomotive; to provide saidmember with integral frame fits or similar means for securement to theside member of the truck or locomotive frame; to provide for formingas'sages integrally with the cylinders an the transverse frame member,and 'also preferably together, the juncture of the two forming a commonoutlet capable of suitable cooperation with the boiler stack; to formthe boiler saddle integrally with the transverse member, preferably atthe juncture of the exhaust conduits; to provide for a novel frame ortransverse member, preferably in the form of a box or hollow structurehaving spaced front and rear walls, as well as upper and lower walls,whereby greater strength and rigidity mav be had; to provide a verticalpost or wall between the center hearing and the juncture of the exhaustconduits, preferably integrally therewith; to provide for casting-in aguide member or surface, such as a bushing of cast iron ineach cylinder,whereby the piston may be guided on the bushing, and to provide for suchother objects, advantages and capabilities as will inherently possessedby the invention. i 1

In the drawings illustrating one form'of the invention Fig. 1 is a parttop plan and part horizontal section of a structure constructed inaccordance with the invention.

Fig. 2 is an end View of the same.

Fig. 3 is a transverse sectional view of the same. v

Fig. 4; is a vertical longitudinal sectional view of a' cylinder andsteam chest.

integral or cast therewith, a back head 6 for the cylinder, and a backhead 7 for the steam chest. To the back head 6 may be integral or casttherewith guide studs 8, to which.

may be connected the forward ends of the cross-head guides in anysuitable manner,

and to the back head 7 is integrally cast a bracket 9, provided withaguide 10 for the cross-head of the valve operating mechanism. To eachsteam chest leads a steam inlet 11 suitably connected with a centralchamber 12 of the steam chest, from which connection may be had to acylinder through the passages 13 and 1 1, when the valve in the steamchest is moved to proper position.

When, the latter valve is moved in an op posite position, orreciprocation, passages 13 and 14 may then communicate with exhaustchambers 16 and 17, respectively, connecting with exhaust passages orconduits 18 and 19, and joining with similar conduits from the othercylinder and steam chest, into a common outlet 20, which may extend intothe lower part of a stack of a locomotive. Steam inlets 11 and exhaustpassages 18 and 19 are formed or cast integrally .with the steam chest,as clearly shown upon the drawings.

At the juncture of theoutlet 20 and the outlet portions of'the exhaustpassages, is preferably integrally cast an arc-shaped saddle 21,upon.which the boiler may rest, in a manner well understood.

The cylinders and valve chest are usually located on oppositesides of alocomotive,

1 and for the purpose of forming the mechanism or construction in onesingle or in- -tegral piece they are connected together by a crossmember 5, preferably in the form of a hollow or box like construction,having for- I ward and rear walls 22 and 23, as well as an upper wall24' and a lower wall 25, to the latter of. which is integrallyforme'd orcast a center bearing 26, designed and adapted for connection orengagement with the truck frame of the locomotive. On the lower wall "25arealso preferably formed frame fits 27 and '28, which are designed-andadapted for 'securement to the longitudinal side frame of .the'locomotive bed or truck esa-sat therefor. Between the juncture of theexhaust conduits and the outlet 20 and the center bearing 26, preferablystands vertically an integral longitudinally extending wall 29, whichalso aids in supporting the outlet portions of the exhaust conduits and,strengthening the .cross member, the ends of the wall 29 beingpreferably formed integral with the front and rear walls 22 and 23.

All of these parts or portions are preferably of cast steel, and allformed in one single pouring in a suitable'foundry and mold. the moltenmaterial-being heated at a sufficient temperature,so that the same maybe poured to produce a single integral cast ing. In this way all. theparts are permanently related to each other, so that there is nonecessity of adjusting the parts and the bolting together thereof, as inprevious constructions, and extra material is avoided, such as flanges,bolts, rivets, and the like. If any portion of the structure should bedamaged by reason of collision, or other-. wise, the same may be readilyrepaired by welding the part damaged, without necessitating thereplacement of-the whole casting, or any part thereof. Great rigidityand- 1 lightness of structure is obtained with much less material thanheretofore required. The installation or application of a single cast--ing of this kind to a locomotive requires but a small fraction ofthelabor and cost here- While I have described and upon the drawingsshown an illustrative errrbodi ment of the invention, it is tobeunderstood that the latter is not limited thereto, but

.comprehends other constructions, details and arrangements of parts,without departing from' the spirit thereof.

Having. thus described my invention, 1 claim:

1. In a locomotive engine having cylinders provided with inletand'exhaust steam passages, a transverse member connected to thecylinders, andhaving spaced walls forming a box like structure, allintegrally connected to the cylinders and for providing a rigidandstrong connecting member between the cylinders, said transverse memberhaving an integral center bearing for connection to a truck frame of thelocomotive.

2. In a locomotive engine'having cylinders provided with inlet andexhaust steam passages, a transverse member connected to the cylinders,and having spaced walls, formin'g a box like structure, all integrallyconnected to the cylinders and lorproviding a rigid and strongconnecting member between the cylinders, and a boiler saddle integrallyformed with said member. 1

3. In a locomotive engine having cylinders provided with inlet andexhaust steam passages, a transverse member connected to the cylinders,and having spaced walls forming a box like structure, all integrallyconnected to the cylinders and for providing a rigid and strongconnecting member between the cylinders, said transverse member havingthe inlet and exhaust passages integrally formed with said member, saidexhaust passages'terminating in a common outlet integrally formedtherewith.

4:. lln a locomotive engine having cylinders provided with inlet andexhaust steam passages, a transverse member connected to the cyinders,and having spaced walls forming a box like structure, allintegrallyconnected to the cylinders and for providing a rigid and strongconnecting member between the cylinders, said transverse member havingthe inlet and exhaust passages integrally "formed with said member, saidexhaust passages terminating in a common outlet integrally formedtherewith, and a boiler saddle integrally formed with said outlet.

5. A locomotive engine having spaced cylinders and steam chests, and atransverse member formed integrally with said cylinders and said chests,said member having integral means for connection to a truck of thelocomotive, exhaust conduits integrally formed with said member and saidcylinders and chests, and a longitudinal element integral with saidmember and'said conduits for supporting said conduits. f

6. A locomotive engine having spaced cylinders and steam chests, and atransverse member formed integrally with said cylinders and said chests,said member having an integral center bearing for engagement with atruck of thelocomotive, exhaust conduits integral with the cylinders andchests and with each other and with said member, and

a vertical supporting element integral with siaid bearing and thejuncture of said conuits.

7. In an engine of the character disclosed, a cylinder, a steam chestand back heads for said, cylinder and chest formed integrally with eachother and with said cylinder and said chest, and cross-head guidemembers formed integrally with said heads.

8. ln combination, a locomotive steam cylinder member, and a steam chestmember, each having a head member, all of said members being formedintegrally, there being integral brackets on said heads for guidingelementsmovable in said cylinder and chest,

respectively.

9., A one-piece casting comprising a locomotive steam cylinder, a steamchest therefor, said cylinderand chest each having an individualintegral head, there being brackets .formed on the exterior of saidheads for supporting a cross head guide and for guiding a valve stem,respectively,

10. ln a cast steel cylinder for locomotives, a head formed integrallywith the cylinder, a cross head guide bracket formed integrally on theexterior of said head, and ribs extending between said cylinder, head,and bracket and reinforcing said head and bracing sai'd braclret,

11. lln combination, a locomotive boiler saddle, a steam cylinder, asteam chest, and brackets for guiding the cross head and for guiding thevalve stem, all of said parts being cast integrally.

12. In combination, a locomotive boiler saddle, a steam cylinder havinga rear head, a steam chest having a rear head, and brackets for guidingthe cross head and for guiding the valve stem, all of said parts beingcast integrally.

ln-witness whereof, ll hereunto subscribe my name to this s ecification,

liEhllitY E, MUCHNIC.

